Question: Which was the country of Vinnutsia Oblast till 1991?
Paraphrase: Give me the name of the country of Vinnutsia Oblast until 1991.
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q166709 p:P17 ?s . ?s ps:P17 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1991')) }